You know it must be something note worthy if it survives as a Wikipedia entry these days:

A TeachMeet is an organised but informal meeting (in the style of an unconference) for teachers to share good practice, practical innovations and personal insights in teaching with technology. These events are often organised to coincide with other educational events like the Scottish Learning Festival and the British Educational Technology and Training Show BETT.
Participants volunteer (via the TeachMeet website) to demonstrate good practice they've delivered over the past year, or discuss a product that enhances classroom practice.
TeachMeet events are open to all and do not charge an entry fee.